/*
 * This file is open source software, licensed to you under the terms
 * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership.  You may not use this file except in compliance with the License.
 *
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/*
 * Copyright 2021 ScyllaDB
 */

#pragma once

namespace seastar {

/// \cond internal
class io_queue;
using io_priority_class_id = unsigned;
class io_priority_class {
    io_priority_class_id _id;
    friend io_queue;

    io_priority_class() = delete;
    explicit io_priority_class(io_priority_class_id id) noexcept
        : _id(id)
    { }

public:
    io_priority_class_id id() const {
        return _id;
    }
};

const io_priority_class& default_priority_class();

} // namespace seastar
